SHIP PROPULSION METHOD AND SHIP PROPULSION DEVICE

WIPO Patent Application WO/2017/149589

A1

[Problem] To provide a ship propulsion method that makes it possible to smoothly transition from motor propulsion to hybrid propulsion. [Solution] A ship propulsion device 1 that has: a propeller 9; a main engine 2 that is controlled by a governor 3; a motor 14 that has torque control performed thereon by an inverter 12; and a controller 4. The controller determines a propulsion state from an external signal and performs control using a motor propulsion control unit 50 or a hybrid propulsion control unit 40. During motor propulsion control, a torque command value is given to the inverter by means of feedback control such that the rotational speed of the motor coincides with a target rotational speed. During hybrid control, the inverter is controlled using an assist torque command value obtained by PID calculation of the deviation between a present value and a target vale for main engine output. Distribution of main engine output and motor assist amount are optimized, and operation of the governor-controlled main engine is streamlined.

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KODERA MASANORI (JP)
TAKEI KOJI (JP)
TASHIRO SHINJI (JP)
SHIRAISHI KOICHI (JP)
HATAMOTO TAKURO (JP)

PCT/JP2016/056008

September 08, 2017

February 29, 2016

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NIIGATA POWER SYSTEMS CO LTD (JP)

B63H21/20; B63H21/14; B63H21/17; B63H21/21; B63H23/30

WO2012095970A1

2012-07-19

JP2013132967A	2013-07-08
JP2011063256A	2011-03-31
JP2014201195A	2014-10-27
JP2000069605A	2000-03-03
JP2011195049A	2011-10-06
US20120083173A1	2012-04-05

NISHIMURA, Norimitsu et al. (JP)

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